Increasingly, though, people in the United States feel that the rich and powerful have become effectively insulated from the legal system, such that the common person is denied any redress. At that point, one no longer feels any reason to continue working within the legal framework, because it seems clear that the framework is not at all "equal" under the law.
Hence, when all other options feel exhausted: murder.
And, frankly, I imagine this will only continue with time, unless this country decides to actually provide some mechanism to hold people in power accountable. Like, I'm frankly surprised no one has attempted to assassinate members of the SCOTUS yet recently, given that they enjoy a lifetime appointment to make wide-impacting, scrutiny-free decisions.